Hoxha ,Rudin Domi, Haxhire Gani,Vjollca Beqiri ,Majlinda Naco ,Aurel Janko ,Bilbil. 2016. “Postoperative Delirium In The Elderly Patients”. International Journal of Medical Science and Clinical Invention 3 (4). https://valleyinternational.net/index.php/ijmsci/article/view/477.